describe('spiderfy', function () {
    /////////////////////////////
    // SETUP FOR EACH TEST
    /////////////////////////////
    var div, map, group, clock;

    beforeEach(function () {
        clock = sinon.useFakeTimers();

        div = document.createElement('div');
        div.style.width = '200px';
        div.style.height = '200px';
        document.body.appendChild(div);

        map = L.map(div, {maxZoom: 18, trackResize: false});

        // Corresponds to zoom level 8 for the above div dimensions.
        map.fitBounds(new L.LatLngBounds([
            [1, 1],
            [2, 2]
        ]));
    });

    afterEach(function () {
        if (group instanceof L.MarkerClusterGroup) {
            group.removeLayers(group.getLayers());
            map.removeLayer(group);
        }

        map.remove();
        div.remove();
        clock.restore();

        div = map = group = clock = null;
    });

    /////////////////////////////
    // TESTS
    /////////////////////////////
    it('Spiderfies 2 Markers', function () {

        group = new L.MarkerClusterGroup();

        var marker = new L.Marker([1.5, 1.5]);
        var marker2 = new L.Marker([1.5, 1.5]);

        group.addLayer(marker);
        group.addLayer(marker2);
        map.addLayer(group);

        marker.__parent.spiderfy();

        expect(marker._icon.parentNode).to.be(map._panes.markerPane);
        expect(marker2._icon.parentNode).to.be(map._panes.markerPane);
    });

    it('Spiderfies 2 CircleMarkers', function () {

        group = new L.MarkerClusterGroup();

        var marker = new L.CircleMarker([1.5, 1.5]);
        var marker2 = new L.CircleMarker([1.5, 1.5]);

        group.addLayer(marker);
        group.addLayer(marker2);
        map.addLayer(group);

        marker.__parent.spiderfy();

        // Leaflet 1.0.0 now uses an intermediate L.Renderer.
        // marker > _path > _rootGroup (g) > _container (svg) > pane (div)
        expect(marker._path.parentNode.parentNode.parentNode).to.be(map.getPane('overlayPane'));
        expect(marker2._path.parentNode.parentNode.parentNode).to.be(map.getPane('overlayPane'));
    });

    it('Spiderfies 2 Circles', function () {

        group = new L.MarkerClusterGroup();

        var marker = new L.Circle([1.5, 1.5], 10);
        var marker2 = new L.Circle([1.5, 1.5], 10);

        group.addLayer(marker);
        group.addLayer(marker2);
        map.addLayer(group);

        marker.__parent.spiderfy();

        expect(marker._path.parentNode.parentNode.parentNode).to.be(map.getPane('overlayPane'));
        expect(marker2._path.parentNode.parentNode.parentNode).to.be(map.getPane('overlayPane'));
    });

    it('Spiderfies at current zoom if all child markers are at the exact same position', function () {

        group = new L.MarkerClusterGroup();

        var marker = new L.Marker([1.5, 1.5]);
        var marker2 = new L.Marker([1.5, 1.5]);

        group.addLayers([marker, marker2]);
        map.addLayer(group);

        // Get the appropriate cluster.
        var cluster = marker.__parent,
            zoom = map.getZoom();

        while (cluster._zoom !== zoom) {
            cluster = cluster.__parent;
        }

        expect(zoom).to.be.lessThan(10);

        cluster.fireEvent('click', null, true);

        clock.tick(1000);

        expect(map.getZoom()).to.equal(zoom);

        expect(marker._icon.parentNode).to.be(map._panes.markerPane);
        expect(marker2._icon.parentNode).to.be(map._panes.markerPane);

    });

    it('Spiderfies at current zoom if all child markers are still within a single cluster at map maxZoom', function () {

        group = new L.MarkerClusterGroup();

        var marker = new L.Marker([1.5, 1.50001]);
        var marker2 = new L.Marker([1.5, 1.5]);

        group.addLayers([marker, marker2]);
        map.addLayer(group);

        expect(marker.__parent._zoom).to.equal(18);

        // Get the appropriate cluster.
        var cluster = marker.__parent,
            zoom = map.getZoom();

        while (cluster._zoom !== zoom) {
            cluster = cluster.__parent;
        }

        expect(zoom).to.be.lessThan(10);

        cluster.fireEvent('click', null, true);

        clock.tick(1000);

        expect(map.getZoom()).to.equal(zoom);

        expect(marker._icon.parentNode).to.be(map._panes.markerPane);
        expect(marker2._icon.parentNode).to.be(map._panes.markerPane);

    });

    it('removes all markers and spider legs when group is removed from map', function () {

        group = new L.MarkerClusterGroup();

        var marker = new L.Marker([1.5, 1.5]);
        var marker2 = new L.Marker([1.5, 1.5]);

        group.addLayers([marker, marker2]);
        map.addLayer(group);

        marker.__parent.spiderfy();

        expect(map._panes.markerPane.childNodes.length).to.be(3); // The 2 markers + semi-transparent cluster.
        expect(map.getPane('overlayPane').firstChild.firstChild.childNodes.length).to.be(2); // The 2 spider legs.

    });

    it('adds then removes class "leaflet-cluster-anim" from mapPane on spiderfy', function () {

        group = new L.MarkerClusterGroup();

        var marker = new L.Marker([1.5, 1.5]);
        var marker2 = new L.Marker([1.5, 1.5]);

        group.addLayers([marker, marker2]);
        map.addLayer(group);

        marker.__parent.spiderfy();

        expect(map._panes.mapPane.className).to.contain('leaflet-cluster-anim');

        clock.tick(1000);

        expect(map._panes.mapPane.className).to.not.contain('leaflet-cluster-anim');

    });

    it('adds then removes class "leaflet-cluster-anim" from mapPane on unspiderfy', function () {

        group = new L.MarkerClusterGroup();

        var marker = new L.Marker([1.5, 1.5]);
        var marker2 = new L.Marker([1.5, 1.5]);

        group.addLayers([marker, marker2]);
        map.addLayer(group);

        marker.__parent.spiderfy();

        clock.tick(1000);

        marker.__parent.unspiderfy();

        expect(map._panes.mapPane.className).to.contain('leaflet-cluster-anim');

        clock.tick(1000);

        expect(map._panes.mapPane.className).to.not.contain('leaflet-cluster-anim');

    });

    it('fires unspiderfied event on unspiderfy', function (done) {

        group = new L.MarkerClusterGroup();

        var marker = new L.Marker([1.5, 1.5]);
        var marker2 = new L.Marker([1.5, 1.5]);

        group.addLayers([marker, marker2]);
        map.addLayer(group);

        marker.__parent.spiderfy();

        clock.tick(1000);

        // Add event listener
        group.on('unspiderfied', function (event) {
            expect(event.target).to.be(group);
            expect(event.cluster).to.be.a(L.Marker);
            expect(event.markers[1]).to.be(marker);
            expect(event.markers[0]).to.be(marker2);

            done();
        });

        marker.__parent.unspiderfy();

        clock.tick(1000);

    });

    it('does not leave class "leaflet-cluster-anim" on mapPane when group is removed while spiderfied', function () {

        group = new L.MarkerClusterGroup();

        var marker = new L.Marker([1.5, 1.5]);
        var marker2 = new L.Marker([1.5, 1.5]);

        group.addLayers([marker, marker2]);
        map.addLayer(group);

        marker.__parent.spiderfy();

        clock.tick(1000);

        map.removeLayer(group);

        expect(map._panes.mapPane.className).to.not.contain('leaflet-cluster-anim');

    });

    it('overrides spiderfy shape positions when custom function has been provided', function () {

        var marker = new L.Marker([1.5, 1.5]);
        var marker2 = new L.Marker([1.5, 1.5]);

        var spiderfyShapePositionsFuntion = sinon.spy(function () {
                return [{x: 1.6, y: 1.6}, {x: 1.6, y: 1.6}];
            }
        );

        group = new L.MarkerClusterGroup({spiderfyShapePositions: spiderfyShapePositionsFuntion});

        group.addLayer(marker);
        group.addLayer(marker2)
        map.addLayer(group);

        marker.__parent.spiderfy();

        sinon.assert.calledOnce(spiderfyShapePositionsFuntion);
    });

    describe('zoomend event listener', function () {

        it('unspiderfies correctly', function () {

            group = new L.MarkerClusterGroup();

            var marker = new L.Circle([1.5, 1.5], 10);
            var marker2 = new L.Circle([1.5, 1.5], 10);

            group.addLayer(marker);
            group.addLayer(marker2);
            map.addLayer(group);

            marker.__parent.spiderfy();

            expect(group._spiderfied).to.not.be(null);

            map.fire('zoomend');

            //We should unspiderfy with no animation, so this should be null
            expect(group._spiderfied).to.be(null);
        });

    });

    describe('spiderfied event listener', function () {
        it('Spiderfies 2 Markers', function (done) {

            group = new L.MarkerClusterGroup();
            var marker = new L.Marker([1.5, 1.5]);
            var marker2 = new L.Marker([1.5, 1.5]);

            group.addLayer(marker);
            group.addLayer(marker2);
            map.addLayer(group);

            // Add event listener
            group.on('spiderfied', function (event) {
                expect(event.target).to.be(group);
                expect(event.cluster).to.be.a(L.Marker);
                expect(event.markers[1]).to.be(marker);
                expect(event.markers[0]).to.be(marker2);

                done();
            });

            marker.__parent.spiderfy();

            clock.tick(200);
        });

        it('Spiderfies 2 Circles', function (done) {

            group = new L.MarkerClusterGroup();
            var marker = new L.Circle([1.5, 1.5], 10);
            var marker2 = new L.Circle([1.5, 1.5], 10);

            group.addLayer(marker);
            group.addLayer(marker2);
            map.addLayer(group);

            // Add event listener
            group.on('spiderfied', function (event) {
                expect(event.target).to.be(group);
                expect(event.cluster).to.be.a(L.Marker);
                expect(event.markers[1]).to.be(marker);
                expect(event.markers[0]).to.be(marker2);

                done();
            });

            marker.__parent.spiderfy();

            clock.tick(200);
        });
    });
});
